OSRAM HALOSTAR OVEN | 20W G4 | 12V High-Temp Halogen

The Osram 64428 (Halostar Oven) is a specialized halogen capsule engineered specifically for the extreme environments of modern ovens and microwaves. Delivering 320 lumens of warm 2800K light, this 20W lamp is built with tempered pins to ensure reliable electrical contact even at temperatures up to 450°C. Its high-grade quartz construction and optimum halogen content provide two to three times the luminous efficacy of standard oven lamps, making it suitable for use during pyrolytic self-cleaning cycles. With a perfect 100 CRI and a compact T3 design, it offers brilliant, glare-free visibility for monitoring your cooking with absolute color accuracy.

Product Overview

The Osram 64428 is the industry standard for high-temperature appliance lighting. Its transversal filament design is optimized for the small reflectors found in oven interiors, providing a broad and even light distribution. Unlike standard G4 bulbs, the Halostar Oven series utilizes specialized gas fills and reinforced glass to withstand the rapid thermal expansion and contraction cycles typical of baking and roasting. It is fully dimmable and contains an integrated UV filter, ensuring it meets the stringent safety requirements of appliance manufacturers worldwide. Its mercury-free design and high energy efficiency class make it a reliable and environmentally conscious replacement part.

• Heat Resistant: Specifically designed to handle ambient temperatures up to 450°C (842°F).
• Exceptional Color Rendering: Ra=100 ensures food looks natural and appetizing during the cooking process.
• Reliable Contact: Tempered pins prevent oxidation and maintain a secure electrical connection at high heat.
• Versatile Fit: Standard G4 bi-pin base fits most luxury ovens, ranges, and microwave cabinets.

Technical Specifications

• Brand: Osram
• Model: 64428 (Halostar Oven)
• Wattage: 20W
• Voltage: 12V
• Base Type: G4 (Bi-Pin, 4mm spacing)
• Luminous Flux: 320 Lumens
• Color Temperature: 2800K (Warm White)
• CRI: 100 / Ra 100
• Rated Average Life: 2,000 Hours (Standard) / 1,000 Hours (High Temp)
• Dimensions: 31mm (MOL) x 10mm (Diameter)
• ILCOS Code: HSGT/C/UB-20-12-G4-10/21.5

Installation & Safety Notes

• Oven Safety: Always ensure the oven is completely cool and the power/gas is disconnected before replacing the lamp.
• Handling: Do not touch the glass capsule with bare hands. Skin oils can create hot spots on the quartz, leading to premature failure or lamp burst. Use a clean cloth or gloves.
• Compatibility: This is a 12V bulb; verify that your appliance uses a 12V transformer and not 120V mains power for the light socket.
• Protective Cover: Always replace the glass lens cover of the oven light fixture after installing the new bulb.

Common Applications

• Domestic Ovens: Interior lighting for conventional and convection ovens.
• Microwaves: Cabinet and interior lighting for high-end microwave units.
• Specialized Appliances: Steamers, rotisseries, and warming drawers.
• Scientific: Microscopic and biochemical analysis equipment requiring high-intensity 12V lighting.